“They tried to help the occupants out of the vehicle best they could, it was upside down so a little difficult,” said Major Jason Rice, Shelby County sheriff's department.

Inside the SUV was a man and wife and their grandson.

“We think they were bringing the grandchild back to parents’ location which may have been in Shelby County,” said Rice.

Authorities believe the couple was from the Northern Kentucky or Southern Ohio area, traveling for the holiday weekend, close to their destination.

They said the man was behind the wheel heading south on LaGrange Road when the crash happened.

“We believe that the driver fell asleep, according to his own statement, drifted off the roadway, hit an Earth embankment near a driveway which caused the vehicle to go airborne, flipping over several times,” said Rice. “So there is extensive damage to the front and the roof of the vehicle."

Authorities said the woman died at the scene. The coroner has not yet released her identity.

The man was taken to University Hospital, and the boy was taken to Kosair Children’s hospital.